Watch this video by Elizabeth Murphy at Memorial University of Newfoundland (Distance Education Learning Technologies).
1. What method is this teacher using - grammar-translation or communicative language teaching?
The approach is broadly grammar-translation: the teacher is working on a particular grammatical construction, and uses the L1 (English) to teach the L2 (French). No effort is made to provide a communicative context for learning.
2. What can be said about this class with respect to constructivist concepts such as
This extreme example of a traditional grammar-based second language class highlights many of the problems associated with this type of teaching: the lack of a motivating communicative context and activities involving learner output and interaction severely limit learning opportunities. For Blyth, it is essential for teachers not to "delay students' gratification" in this way.